1078326987 has 4 divisors (see below), whose sum is σ = 1437769320. Its totient is φ = 718884656.

The previous prime is 1078326973. The next prime is 1078327031. The reversal of 1078326987 is 7896238701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1078326987 - 2⁸ = 1078326731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1078326947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179721162 + ... + 179721167.

It is an arithmetic number, because the mean of its divisors is an integer number (359442330).

Almost surely, 2^1078326987 is an apocalyptic number.

1078326987 is a deficient number, since it is larger than the sum of its proper divisors (359442333).

1078326987 is an equidigital number, since it uses as much as digits as its factorization.

1078326987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359442332.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 1078326987 is about 32837.8895028289. The cubic root of 1078326987 is about 1025.4555142142.

The spelling of 1078326987 in words is "one billion, seventy-eight million, three hundred twenty-six thousand, nine hundred eighty-seven".